#include <windows.h>
#include <stdio.h>

typedef BOOL (WINAPI *FN_ImeDestroy)(UINT uReserved);
typedef BOOL (WINAPI *FN_NotifyIME)(HIMC hIMC, DWORD dwAction, DWORD dwIndex, DWORD dwValue);

typedef struct IMEDPI /* unconfirmed */
{
    struct IMEDPI *pNext;           // 0x0
    HINSTANCE      hInst;           // 0x4
    HKL            hKL;             // 0x8
    DWORD          dwUnknown0;      // 0xc
    DWORD          dwUnknown1;      // 0x10
    DWORD          dwUnknown2[14];
    DWORD          cLockObj;        // 0x4c
    DWORD          dwFlags;
    DWORD          dwUnknown3[7];
    FN_ImeDestroy  ImeDestroy;
    DWORD          dwUnknown4[5];
    FN_NotifyIME   NotifyIME;
    /* ... */
} IMEDPI, *PIMEDPI;

#define IMEDPI_FLAG_UNKNOWN 1
#define IMEDPI_FLAG_UNKNOWN2 2

typedef VOID (WINAPI *FN_ImmUnlockImeDpi)(PIMEDPI pImeDpi);

int main(int argc, char **argv)
{
    INT ret = EXIT_SUCCESS;
    LPVOID pv;
    HINSTANCE hImm32 = LoadLibraryA("imm32.dll");
    FN_ImmUnlockImeDpi pImmUnlockImeDpi = (FN_ImmUnlockImeDpi)GetProcAddress(hImm32, "ImmUnlockImeDpi");
    if (!pImmUnlockImeDpi)
    {
        puts("Not found");
        ret = EXIT_FAILURE;
    }
    else
    {
        PIMEDPI pImeDpi = (PIMEDPI)calloc(sizeof(IMEDPI), 1);
        pImeDpi->cLockObj = 1;
        pv = &pImeDpi->dwUnknown1;
        pImeDpi->dwUnknown1 = (argc >= 2 ? atoi(argv[1]) : 0);
        printf("pv: %p\n", pv);
        fflush(stdout);
        DebugBreak();
        (*pImmUnlockImeDpi)(pImeDpi);
    }
    FreeLibrary(hImm32);
    return ret;
}